气液复合型岩爆模拟加载器研制

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Abstract A special gas-liquid composite fast-compensating loader for rockburst simulation is developed，and its design principles and technical characteristics are introduced. The loader which has four cavities simulates rockburst by using adiabatic expansion of compressed gas in energy storage cavity for fast-compensating pressure fall at failure of sample. Result shows that the loader has good capability in high rigidity，stable operation performance and reliable high-speed sealing. The key issues could be solved including eliminating back pressure in return cavity，preventing gas from getting into hydraulic cavity and sealing high-speed guide. It can realize rockburst modeling in different intensity degree under the condition of uniaxial loading. Moreover，some issues of loader in further study are discussed.

Key words： rock mechanics rockburst simulation rockburst gas-liquid composite high-speed sealing loader

Received: 28 June 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/Isl/3177

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